We have no specific details on the role, but it appears Natalie Portman has been cast as the lead female in Kenneth Branagh’s, Thor. There can really only be two options though cant there? The Asgardian Sword-maiden Lady Sif, or the nurse Jane Foster. Lady Sif seems a bit of an outside shot as Portman is only 5’3 and may not portray the kind of prowess that Sif does in the comics.
Meanwhile, Alexander Skarsgard (True Blood) is still the favorite to play Thor himself, but there other’s in the running. Branagh is also keen to mix the connection between this and the studio’s productions including Iron Man, Captain America, and the Avengers.